{
  "bibcode": "2008GCN..7318....1C",
  "body": "B. E. Cobb, part of the larger SMARTS consortium, reports:\n\nUsing the ANDICAM instrument on the 1.3m telescope at CTIO, we\nobtained optical/IR imaging of the error region of GRB 080218b\n(Schady et al. GCN 7314) with a mid-exposure time of ~3.1 hours\npost-burst (2008-02-19 03:03 UT).  Total summed exposure times amounted\nto 18 minutes in I and 15 minutes in J.\n\nNo source is detected at the position of the X-ray\nafterglow (Schady et al. GCN 7314) to approximate\nlimiting magnitudes of I > 21.1 and J > 18.7. Magnitudes\nare calibrated using USNO-B1.0 values for I, and 2MASS\nvalues for J.",
  "circularId": 7318,
  "createdOn": 1203393324000,
  "email": "cobb@astro.yale.edu",
  "subject": "GRB 080218b, SMARTS optical/IR limits",
  "submitter": "Bethany Cobb at Yale U  <cobb@astro.yale.edu>",
  "eventId": "GRB 080218B"
}